Turbo Presta Valve Tube with Talc

"Turbo Presta Valve Tube with TalcThe least expensive way to ditch 40+ grams of rotating weight is with our Turbo Talc Tubes. A patented, oversized 4.8cm valve base prevents tearing, while a partially threaded valve stem provides a clean interface with pumps. Our lightest and most supple tube offering, it's also been proven in rolling-resistance testing to reduce drag by as much as 13% per wheel.Packed in talc for easier installation.4.8cm valve base prevents issues of valves tearing off.Smooth at the top for easier pump head insertion and reduced wear on pump internals.Thinner tube design saves approximately 40 grams of rotating weight.Thickness0.6mm"